A5101840837- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Advanced X-ray Imaging Techniques
- Photocathodes and Microchannel Plates
- Wireless Power Transfer Systems
- Energy Harvesting in Wireless Networks
- Gyrotron and Vacuum Electronics Research
- Advanced materials and composites
- Metal and Thin Film Mechanics
- Mechanical stress and fatigue analysis
- Advanced Surface Polishing Techniques
- Microwave Engineering and Waveguides
- Microstructure and mechanical properties
- Metal Alloys Wear and Properties
- Magnetic confinement fusion research
- Electric Motor Design and Analysis
- Particle Detector Development and Performance
- Fusion materials and technologies
- Laser and Thermal Forming Techniques
- Titanium Alloys Microstructure and Properties
- Advanced Battery Technologies Research
- Power Quality and Harmonics
- Topology Optimization in Engineering
- Adhesion, Friction, and Surface Interactions
Jiangxi Normal University
2023-2024
China University of Petroleum, East China
2024
Central South University
2014-2023
Qingdao University
2021-2022
Southwest Jiaotong University
2019-2021
Brookhaven National Laboratory
2010-2020
Hunan Xiangdian Test Research Institute (China)
2020
Chiang Mai Rajabhat University
2018
Fudan University
2015
Lawrence Berkeley National Laboratory
2009
The dynamic nature of a resource-sharing environment means that applications must be able to adapt their behavior in response changes system status. Predictions future performance can used guide such adaptations. In this paper, we present and evaluate several new one-step-ahead low-overhead time series prediction strategies track recent trends by giving more weight data. We results show tendency model with different ascending descending performs best among all studied. A comparative study...
Dynamic aperture (DA) is one of the key nonlinear properties for a storage ring. Although there have been both analytical and numerical methods to find aperture, reverse problem how optimize it still challenging problem. A general flexible way optimizing DA highly demanded in accelerator design operation. In this paper, we discuss use multiobjective optimization DA. First consider using objective functions based only on tracking results. Data mining these results demonstrated correlation...
The full-bridge can further improve the output power through parallel inverters. inverter voltage of single-switch <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LC</i> -resonant circuit is a combination trapezoidal wave and half-sine wave; there no relevant research on connection circuit. Therefore, this article presents novel input-parallel circuit; topology adopts switchable secondary networks for constant-current (CC) constant-voltage...
Shadows of black holes surrounded by an optically thin emitting medium have been extensively discussed in the literature. The Hioki-Maeda algorithm is a simple recipe to characterize shape these shadows and determine parameters system. Here we extend their idea case dressed hole, namely hole geometrically thick accretion disk. While boundary shadow corresponds apparent photon capture sphere, that image innermost stable circular orbit. Even this case, can infer spin viewing angle. size are...
In this paper, we explore a method to manipulate low energy electron bunches in space charge dominated regime, and use design linac bunch compressors compress regime. the method, effects instead of avoiding them; i.e., forces generate required chirp ordinary which uses rf accelerating system chirp. We redefine concepts dispersion function beta functions regime guide optimization. Using study (5--22 MeV) compressor produce short ($\ensuremath{\sim}150\text{ }\mathrm{fs}$) small size...
In the heat exchangers of sodium-cooled fast reactors, sodium flow can cause tubes to vibrate, resulting in fretting wear damage due contact between (2.25Cr-1Mo steel) and their support plate (Gr5C12 alloy). this work, effects temperature on behavior a 2.25Cr-1Mo transfer tube Gr5C12 alloy rod were studied. The results showed that coefficient friction (COF) volume increased first then decreased with increase temperature. Moreover, great performance at high temperatures than room 80 °C,...
We report an efficient dynamic aperture (DA) optimization approach using multi-objective genetic algorithm (MOGA), which is driven by nonlinear driving terms computation. It was found that having small low order a necessary but insufficient condition of decent DA. Then direct DA tracking simulation implemented among the last generation candidates to select best solutions. The demonstrated successfully in optimizing NSLS-II storage ring
Comprehensive Summary Deuterium labelling possesses wide applications in pharmaceuticals, chemical science and materials science. Development of efficient methodologies for the synthesis deuterium labelled compounds, especially hydrogen isotope exchange (HIE), continued to receive an impressive attention over years. Herein, we developed a nitrogen doped nano‐scale nickel catalyst incorporation variety heterocycles using D 2 O as source. The usefulness this approach has been demonstrated by...
Systematic space-charge resonances are found to cause substantial emittance growth in proton driver rings and non-scaling fixed field alternating gradient (FFAG) accelerators. To avoid systematic nonlinear resonances, the phase advance of each cell must π/2 π/3. This limits betatron tune range momentum acceptance for FFAG The factor (EGF), defined as ratio final initial emittance, is obey scaling properties linear shift parameter, ramping rate, stop-band widths random quadrupole...
Bulk pure copper samples with varying roughness were prepared, heated and oxidized at different temperatures in air by using an ordinary box-type heat treatment sintering furnace to form oxide layers. Electrical contact fretting wear tests conducted on treated a brass ball investigate the effects of surface oxidation layers electrical properties. Test results showed that increased after became prominent 400 °C. The friction coefficient resistance 200 °C lower than those room temperature...
Aiming at the problem that single-switch inverter for wireless power transmission circuit cannot realize parallel connection of three or more inverters, a scheme can arbitrarily expand number inverters by changing structure is proposed. In this article, current sharing coil (InterCell Transformer) used to share between branches improve system's stability. By adding current-increasing <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LC</i>...
A novel and efficient electrochemical oxidative transamidation of tertiary amines with N-acyl imides is described. This protocol environmentally friendly ease to handle as are used surrogates for secondary amines. The C-N bond cleaved, preparing amide compounds in a facile approach 29 examples 11–80% yields.